baber/WOPTO huggingface dataset:
Patent GB-1331970-A (GB)
Title: Electric resistances and materials therefor
IPC: H01L45/00
Filed: 1970-12-17
Abstract: 1331970 Glass composition MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 17 Dec 1970 [17 Dec 1969] 59992/70 Heading C1M [Also in Division H1] A glassy material consists essentially of tellurium, iron and oxygen in which the atomic ratio of tellurium to iron is in the range 85 : 15 to 64: 36. A non-rectifying monostable negative resistance device may be formed from a body 1 of such a material by attaching to each of two spaced surfaces therof an electrode 2, 3. The body has a thickness of between 0À2 mm. and 0À002 mm. and the electrodes may be of titanium nickel, iron, zirconium or carbon. Such a device may be produced by coating on to the surface of one plate-like electrode a slurry comprising the powdered glass dispersed in an organic vehicle such as one containing 30% ethyl cellulose and 70% carbitol acetate by weight, heating the electrode at 150 C. to evaporate the vehicle and then heating at 510C. to produce a molten glass layer of uniform thickness. The second electrode may then be provided by painting a graphite dispersed paste on to the solidified glass body or by vacuum deposition of a metal. Alternatively the device may be produced by the vacuum deposition of two metal electrodes on a ground piece of glass.
Patent GB-1415880-A (GB)
Title: Plant for the mechanical-biological purification of effluent
IPC: C02F3/08
Filed: 1972-12-29
Abstract: 1415880 Effluent purification MECAFINA SA 29 Dec 1972 [29 Dec 1971] 60049/72 Heading C1C [Also in Division B1] Plant for the purification of effluent comprises means for the biological purification of the effluent and a drivable drum filter for the mechanical purification said filter having cleaning means for the filter surface, the cleaning means having a suction device with a suction nozzle immersed in the effluent and engaging the deposition side of the filter surface, the nozzle aperture extending at right angles to the direction of relative movement between the filter surface and suction nozzle. A suitable plant is shown in Figs. 1 and 2. In operation effluent is fed via inlet 16 into basin 17 and thence via rotating scoop 18 to the rotating filter 10. Sludge is removed by rotating scoop 21, and effluent passes into the part of the container 2 following immersion trickling filter 10 where most of the suspended matter settles on filter surface 11. Purified effluent is removed via outlet 8. Settled matter will in time reduce the permeability of surface 11 which will result in the bulding up of a back pressure in container 2. When this back pressure reaches a predetermined value the suction nozzle 12 is actuated and removes the settled matter. The permeability of the filter surface thus being restored, the suction nozzle is automatically switched off. In alternative embodiments the drum may be mounted about a vertical axis (Figs. 3 and 4, not shown), or it may comprise a number of aligned disc chambers 26 co-operating with a series of nozzles 12a (Figs. 5 and 6, not shown). Two drums may be simultaneously operated in one plant (Fig. 7, not shown). The filter surface may be constructed of rot-resistant plastics such as polyesters or polypropylene, or glass fibres. A protective metal grid may secure the filter surface to the drum. Alternatively the filter surface may be in the form of porous filter plates, of ceramic or sintered plastic.
Patent GB-1325184-A (GB)
Title: Detla encoders
IPC: H03M3/02
Filed: 1970-12-18
Abstract: 1325184 Delta encoder INTERNATIONAL BUSINESS MACHINES CORP 18 Dec 1970 [31 Dec 1969] 60208/70 Heading G4H In a delta encoder in which an analogue input signal is compared at clock times defined by a pulse train having a frequency f with a reference signal generated by an integrating circuit which is charged or discharged by a predetermined amount (the quantization step) following each comparison in response to the result of that comparison, a control circuit generates several control signals each having a different frequency given by (n + ¢)f (n = 0. 1, 2 ....) and selectively applies one of the signals to a current supply device which is operative to charge and discharge the integrating circuit during respective halves of each control signal pulse cycle, the control signal selected being dependent on the output of the decoder. The control circuit 50, see Fig. 3, supplies signals of frequency (n + ¢) f B , where f B  is the sampling clock frequency to switches 21 and 23 so that over a single clock time defined by the sampling frequency capacitor 25 will undergo a net charge or discharge depending on the initial switching phase. By varying the value of the switching frequency the net charge or discharge of the capacitor over a single bit time may be varied in order to deal with quickly varying input signals or input signals which vary only by small amounts. In prior encoders having a quantization step of constant size such inputs generated spurious output signals comprising a sequence of identical bits and a sequence of alternate 1 and 0 bits respectively. The control circuit includes a system of delay devices and "exclusive OR" gates which generate signals X n , Y n , and Z n  indicative of the presence and type of spurious output sequences. A counter 100 supplied by the sampling clock signal f B  generates outputs M and N at counts corresponding to the critical length of spurious output sequences beyond which a change in the size of the quantization step must be made. When a spurious output sequence exists and the appropriate predetermined count output M or N occurs counter 100 is reset via AND gates 102 or 103 and counter 110 is incremented or decremented in order to change the switching frequencies 18, 19 to the next higher or lower value. The switching frequency is derived from an input 51 supplied with a frequency f A  = mf B  via counters 120, 121 which act as dividers and gates 111, 115 selectively enabled in accordance with the contents of counter 110.
Patent GB-1412030-A (GB)
Title: Method for the adherence of oil type metal working coolants to metal surfaces
IPC: C10M159/10
Filed: 1973-12-31
Abstract: 1412030 Metalworking lubricants and coolants NALCO CHEMICAL CO 31 Dec 1973 [27 April 1973] 60228/73 Heading C5F 5-3000 ppm of an oil-soluble polymer formed by the polymerization of at least one mono- or diolefinic compound through an aliphatic unsaturated group and having a molecular weight of at least 100,000 is incorporated in an oil-type metal working coolant to improve the capability of the coolant to adhere to metal surfaces. The preferred polymers are homopoymers or copolymers of ethylene, propylene, isobutylene, butadiene and/or isoprene; other suitable monomers are lised. A suitable coolant consists of 8À33% by weight sulphurized fatty oil, 2À98% chlorinated paraffin, 62À02% sulphurized pale oil, 0À7% of a 3% solution of polyisobutylene, 4À17% of methyl esters of palmitic and oleic acids, 21% mineral seal oil.
Patent GB-1272725-A (GB)
Title: Plasma tube impedance variation frequency stabilized gas laser
IPC: H01S3/139
Filed: 1970-12-21
Abstract: 1,272,725. Lasers. UNITED AIRCRAFT CORP. 21 Dec., 1970 [20 March, 1970], No. 60509/70. Heading H1C. [Also in Division G3] The output frequency of a CO 2  or He-Ne laser is stabilized by feedback positional control of an adjustable resonator mirror 28, frequency deviation being detected by utilizing the consequential variation in the gas discharge current or voltage drop, while its sense is determined from a continuous modulation produced by dithering the adjustable mirror. As shown, the laser gas discharge tube 10 has Brewster windows 24, and is positioned between the adjustable resonator mirror 28 and a fixed resonator output mirror 26 which is either apertured or partially transmitting. The adjustable mirror is dithered by a piezo-electric transducer 30 driven by an oscillator 32, and has an average position determined by a D.C. signal applied from a synchronous detector 34 through a D.C. amplifier 36. The synchronous detector combines the oscillator output with an A.C. signal obtained from the gas discharge supply circuit 14-22 through a condenser 42, the A.C. input signal to the detector comprising the modulation in the power supply current due to the dither combined with current changes due to output frequency fluctuation.
Patent GB-1317319-A (GB)
Title: Bolt and washer assembly
IPC: F16B23/00
Filed: 1970-12-29
Abstract: 1317319 Bolt and washer assembly STANDARD PRESSED STEEL CO 29 Dec 1970 [2 Jan 1970] 61524/70 Heading F2H A bolt 10 for forming a joint which includes an abradable structural element (28) is provided with a captive washer 16 having smooth inner and outer bearing surfaces 24, 26 and an annular portion 23 extending with clearance over part of the end surface of the bolt head 12. A lubricant such as a coating of P.T.F.E. may be applied to any one or more of the bearing surfaces 18, 24, 26 of the bolt and/or washer to reduce friction between the bolt, which rotates during joint assembly, and the washer which does not turn. As shown in Fig. 2, the surfaces 18, 24, 25 may be frusto-conical.
Patent GB-618540-A (GB)
Abstract: 618,540. Gyroscopic apparatus. SPERRY GYROSCOPE CO., Inc. Aug. 28, 1946, No. 25853. Convention date, Aug. 28, 1945. [Class 97 (iii)] In a directional gyroscope limit stops are provided on the vertical ring and the rotorbearing frame to limit the permitted angular movement of the rotor-bearing frame relative to the vertical ring to an angle between 83 and 87 degrees inclusive on either side of a plane containing the horizontal axis of the frame and the vertical axis of the ring. As shown, a pair of limit stops 23, 24 mounted on the rotor bearing frame 18 co-operate with a single limit piece 25 mounted on the vertical ring 14. At least one of the limit stops may be in the form of a flat spring.
Patent GB-1368966-A (GB)
Title: Mercury recovery  process
IPC: C22B43/00
Filed: 1970-12-31
Abstract: 1368966 Recovering mercury BP CHEMICALS Ltd 1 Dec 1971 [31 Dec 1970] 61948/70 Heading C7D Mercury is recovered from aqueous solutions of mercury compounds, e.g. spent brine solutions from mercury cathode cells by passing an inert gas through the solution in the presence of a reducing agent which may be ferrous sulphate, when the pH of the aqueous solution is greater than 5, sodium borohydride, hydrazine, hydroxylamine salts of hydrazine or hydroxylamine, or D-glucose, when the solution is alkaline, or iron or steel turnings or chips and recovering the mercury entrained in the effluent gas stream. The inert gas is preferably air or nitrogen with the temperature of the aqueous solution maintained between 35 and 95‹C. The process may be applied to solutions containing mercury in elemental or insoluble compound form by incorporating a suitable conversion treatment to soluble compound. If the aqueous solution contains oxidizing agents, then an initial reduction step employing sodium sulphite or sulphur dioxide is provided before the inert gas blowing. Mercury may be recovered from the effluent gas stream using methods disclosed in Specifications 1250171 (see Division C1) and 1207215.
Patent GB-1321880-A (GB)
Title: Apparatus for displaying a graphical representation of an electrical signal
IPC: G01R17/04
Filed: 1970-12-31
Abstract: 1321880 Cathode-ray tube circuits HONEYWELL Inc 31 Dec 1970 [8 Jan 1970] 61995/70 Heading H4T An electrical waveform is reproduced on a photosensitive sheet 13 (Fig. 1) by selective bright-up of a C.R.T. scan along line 12 between points representing successively sampled values of the input at (say) 1a, the sheet 13 moving continuously so that the waveform is reproduced as shown in Fig. 4. The arrangement illustrated is able to reproduce three independent input waveforms from 1a, 1b, 1c, each being applied to a comparator receiving also a ramp voltage representing the tube line scan, and generating an output whenever the ramp voltage is greater. This output is applied to an exclusive OR gate such as 5a, together with the similar signal derived from the preceding line scan delayed by one line period so that the gate output will be high between successive sample values. OR-gate 14 combines the signals from the three sources to unblank the tube beam. Alternative arrangements for producing the same output signals but using monostable multivibrators and capacitor analog stores instead of the delayline arrangements of Fig. 1 are described and illustrated schematically.
Patent GB-1334395-A (GB)
Title: Installation including two slewing cranes
IPC: B66C23/52
Filed: 1970-12-31
Abstract: 1334395 Jib cranes SIEMENS AG 31 Dec 1970 [31 Dec 1969] 62049/70 Heading B8B An installation, on board ship or in a harbour, includes two slewing and luffing cranes 1, 2 arranged on and supported by a housing 3 for independent or joint operation. The housing 3 can be rotated about a fixed column 14 by a motor (not shown) driving a pinion (not shown) meshing with a gear 15 attached to the column 14, these parts being arranged in the housing 3. Also arranged in the housing 3 are the means for operating the similar cranes 1, 2, i.e. slewing motors 4, 5 with motor-generator sets 4a, 5a for supplying them, lifting motors 6, luffing motors 7 and so on. All the parts in the housing 3, except the column 14, rotate with it. The towers 1b, 2b are openwork towers and the lifting and luffing ropes 12a, 12b are guided within them. The ropes 12a may jointly operate a grab (26), Fig. 3 (not shown), a differential limit switch (27), Fig. 4 (not shown), between rope drums 8 indicating " grab open " and " grab closed " positions. In a modification, Fig. 5 (not shown), the slewing motors 4, 5 may be arranged to be uncoupled from slewing rings 10 and coupled to the gear 15 to eliminate the separate slewing drive for the housing 3.
Patent GB-640081-A (GB)
Abstract: 640,081. Control systems for discharge apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. June 8, 1944, No. 11003. Convention date, June 8, 1943. Addition to 567,613. [Class 38 (iv)] [Also in Group XXXVII] A starter for a fluorescent or like discharge tube having filamentary electrodes has in series therewith and in the same casing a lock-out switch provided with a resetting button projecting through the end wall of the casing, the lock-out switch comprising two co-operating contacts, one of which is spring-urged along a rod but normally latched by the second, which is a thermally-responsive strip slowly heated by the current in the starting circuit. As shown in Fig. 2, the starter W for a lamp comprises a glow discharge switch carried by the insulating base 20 of a casing 30a. The starting circuit also includes a heating resistance 43a for a bimetallic strip 40a forming an element of the lock-out switch. Strip 40a is secured at one end to base 20 and is formed at the other as a latching contact 45 for normally engaging and retaining contact 46a of the lock-out switch which is urged along a rod 47a by a spring 49a. A heatinsulating porcelain block 70 has channels separately accommodating the strip 40a and heater 43a to retard heating of the strip and so allow several starting attempts before the strip flexes sufficiently to release the latch and disengage contacts 45, 46a. Resetting button 50a protrudes through a hole 31a in the top of the casing.
Patent GB-2028902-A (GB)
Title: Hydraulically Powered Attachment for a Tractor
IPC: B27L7/00
Filed: 1978-08-29
Abstract: A hydraulically powered attachment for a tractor, which attachment can be used alternatively for pressing stakes into the ground or splitting logs or stakes and comprising a rigid elongate mast (1), means (3, 4, 5, 6) whereby the mast can be mounted at or adjacent a first of its ends to the three point linkage of a tractor in either a vertical or horizontal orientation, a collar (10) slidable longitudinally of the mast (1) a double-acting hydraulic ram (8, 9) connected between a position at or adjacent said first of the ends of the mast and the slidable collar (10), an abutment member (12 or 24) on the collar (10), and a knife member (25, 26) securable at or adjacent a second of the ends of the mast (1), the arrangement being such that with the mast in a vertical orientation the abutment member (12) can be used for pressing stakes into the ground and with the mast in a horizontal orientation the abutment member (24) can press logs or stakes towards the knife member (25, 26) to split the logs or stakes longitudinally. Preferably an unstable relief valve is provided in a hydraulic power connection to the double-acting ram to impart a vibratory hammer action to the abutment member. <IMAGE>
Patent GB-2007416-A (GB)
Title: Coil release mechanism for vending machines
IPC: G07F5/06
Filed: 1978-10-03
Abstract: A coin totalizer for a vending machine comprises a coin sleeve (5) having two or more elongate compartment (5a, 5b) arranged side-by-side and vertical into which, through their top ends the coins are directed, each compartment (5a, 5b) communicating with the or each adjacent compartment adjacent its top end whereby the top coin in each compartment can abut the top coin in the or each adjacent compartment. An adjustable member or members (17) selects the number of coins of a given type which can be contained in each compartment to select a desired total value of coins in the coin sleeve for the article being vended. Means (22) are provided for engaging the top coin of one end compartment and biasing it towards the positions of the top coins in the other compartments, the degree of movement of the engaging means providing a check on whether each compartment contains a coin in the top position and thus the requisite number of coins. The coin sleeve (5) is movable relative to the adjustable member or members (17) in a direction transverse to the longitudinal direction of the compartments to enable the coins to be released. <IMAGE>
Patent GB-2033490-A (GB)
Title: Wind turbine
IPC: F03D7/06
Filed: 1978-11-03
Abstract: The turbine includes vertically disposed pivotally mounted blades 12 each provided with a steering vane 50 disposed at the downstream end of its associated blade 12 and deflectable between extreme positions on opposite sides of the chord of the blade under the control of an orienting mechanism. The latter may be toggle operated. Mechanisms for varying the extent of deflection of the vanes 50 in dependence on variations in wind velocity, and for automatically or manually limiting the rotational speed of the turbine may be provided. <IMAGE>
Patent GB-2023533-A (GB)
Title: Palletizing Apparatus
IPC: B65G57/06
Filed: 1978-11-09
Abstract: Palletizing apparatus comprises at least one pallet carrier (13, 14) located after a plurality of feed conveyor elements (0-5), and a palletizing table (6) which is movable transversely of the conveyance direction of the conveyor elements and is disposed between the conveyor elements and the pallet carrier, said palletizing table having a handling platform (7) for at least one layer of the products to be palletized, this platform being extensible, substantially horizontally, over the pallet carrier and co-operable with discharge means (29) Fig. 2 (not shown) for discharging the layer of products on to the pallet carrier when the platform is retracted, the pallet carrier being lowerable to the extent of a layer of the products, in stepwise manner, after each occasion it has been fed with a layer of products. <IMAGE>
Patent GB-2034454-A (GB)
Title: Warning light for a vehicle or stationary object
IPC: F21V15/00
Filed: 1978-11-17
Abstract: In an apparatus for providing a warning light on a vehicle or stationary object, a battery 20 and a lamp bulb 21 are housed in a case having a transparent lens or element 28 from which extends a protective tube 11. The case and the tube may be welded to the vehicle or stationary object to make the apparatus resistant to removal. <IMAGE>
Patent GB-2007989-A (GB)
Title: Dart flight stem
IPC: F42B6/00
Filed: 1978-11-28
Abstract: A stem for lightweight dart flights of the kind formed from folded paper or plastics sheet material comprises a rear end formation 15 forming an integral structure with a plurality of forwardly directed limbs 16, the flight being mounted by sliding its wings 17 between said limbs towards the end formation following which forwardly projecting free ends of the limbs are gathered together to resiliently clamp the wings, and secured by being inserted into a rear end socket 13 of the dart body or of an intermediate shank 12 connected to the body 10. Preferably the end formation is rearwardly tapered or pointed to deflect other darts. The limbs may be metal wires or the stem may be an integral plastics moulding. <IMAGE>
Patent GB-2008952-A (GB)
Title: Pheromone
IPC: A01N37/02
Filed: 1978-12-01
Abstract: This invention relates to a composition which comprises as an insect attractant (Z)-11-hexadecenyl acetate in admixture or conjunction with one or more carrier(s), a method of treatment of an area which comprises exposing the area to the influence of (Z)-11-hexadecenyl acetate or a composition of the invention and the use of (Z)-11- hexadecenyl acetate or a composition of the invention for population control purposes. The invention is particularly directed to the control of the cabbage moth Mamestra brassicae.
Patent GB-2011636-A (GB)
Title: Photographic silver halide material with at least one dye- containing layer free from silver halide
IPC: G03C1/30
Filed: 1978-12-20
Abstract: Photographic silver halide material which contains, on a photographic support, at least one photographic silver halide emulsion layer and at least one coloured layer (filter- or antihalo layer) which is free from silver halide and which contains at least one water-soluble, organic dye containing acid groups, a colloidal binder crosslinked with a hardener, the hardener containing a tertiary nitrogen atom and the sum of the alkyl and alkylene radicals bonded to this tertiary atom being at least 7, and a water-insoluble polymer.
Patent GB-2036031-A (GB)
Title: High Solids Coating Composition
IPC: C09D5/38
Filed: 1978-12-21
Abstract: A fast curing, high solids coating composition for use as an automotive topcoat and which upon curing forms a hard, glossy, durable coating exhibiting excellent resistance to solvents and water contains greater than about 60 percent by weight of nonvolatile solids and, exclusive of pigments, solvents and other nonreactive components, consists essentially of:   (A) a film-forming copolymer selected from monofunctional copolymers bearing pendant epoxy functionality and bifunctional copolymers bearing hydroxy functionality and pendant epoxy functionality, said copolymers have a number average molecular weight (Mn) of between 1500 and 10,000 and a glass transition temperature (Tg) of between -25 DEG  and 70 DEG C.;   (B) at least one mono- or diester of phosphoric acid;   (C) an amino resin crosslinking agent; and   (D) optionally a hydroxy functional additive.   The organophosphate ester is included in the composition in an amount sufficient to provide between 0.67 and 1.4 acid equivalents for each epoxide equivalent of the copolymer (A), and the amino resin crosslinking agent is included in the composition in an amount sufficient to provide at least about 0.67 equivalents of nitrogen crosslinking functionality for each hydroxyl equivalent included in the composition (i) as a hydroxyl group on said optional hydroxy functional additive, (ii) as a hydroxyl group on said film-forming copolymer or (iii) as a result of esterification of the pendant epoxy functionality of said film-forming copolymer during curing of the composition.